During a segment on Monday, the "Morning Joe" cohost slammed Republican members of Congress for backing Trump despite comments and policy proposals that have racial, ethnic, and religious bends.

Those included Trump's proposal to temporarily bar Muslims from entering the US and his feud with a judge of Mexican heritage, the latter of which Scarborough said was "completely racist."

"They can't be morally outraged this week when they knew what he was doing last week," Scarborough said of Republicans who have endorsed Trump, the presumptive Republican nominee for president.

"These Republicans that are so shocked and stunned at this clear act of racism had all the evidence in the world before that he had done things that stopped them from endorsing him," Scarborough continued.

The "Morning Joe" cohost repeatedly knocked Trump on Monday over the mogul's rhetoric.

Scarborough and his cohost Mika Brzezinski expressed dismay after playing a clip of Trump highlighting his support among black voters at a rally. During the rally, he abruptly pointed to a man in the crowd and said, "Look at my African-American over there."

"What century is that man from?" Scarborough said several times with his hand on his forehead.

And later in the show during a conversation with Republican Sen. Jeff Flake of Arizona, Scarborough condemned Trump's suggestion that Indiana-born Judge Gonzalo Curiel could not fairly preside over lawsuits against Trump University because of the judge's Mexican heritage.

"What standard is this? It's not American," Scarborough said.

Publicly, Trump's relationship with Scarborough and Brzezinski has apparently cooled in recent days.

While the "Morning Joe" hosts have been criticized for their occasional coziness with Trump, in recent days the real-estate magnate has resumed rhetorical attacks on the show.

Trump knocked the show last week shortly after Brzezinski expressed dismay at House Speaker Paul Ryan's endorsement of the presumptive Republican presidential nominee.